II, 



frab. in fossis prope Neudamm Borussiae ubi cl. Hermann 1. 

 detexit. 



A Bp. minuta guacum Archer in Pritch. Tnf. conjunxit apicibus 

 obtusis vel rotundatia rubro-eapitatis satis superque diversa. 



Sp. truncata Areher (in Micr. Journ. 1862 p 253 T XIT 

 F. 28-31. et 1867, July. T. VIII. F. 12. [Zygospora]). Sp. 'cylindrica,' 

 sexies vel octies longior quam lata, polos versus leniter attenuata, apici- 

 bus obtuso-truncatis; lamina chloropbyll. unica arcte spiraliter torta, 

 apices non attingente. v. ic. 



Diam. '/su'" = 0,00028". 



Hab. in paludibus parvis ad Dublin in Scotia. 



Cellulae utroque polo acutae. 



Sp. parvula Archer (Micr. Journ. 1862. p. 254. T. XIT. F. 32—43.) 

 Sp. minima, fusiformis , diametro 4 — 8-plo longior, apicibus acutis • 

 lamina chlorophyll. unica obliqua, laxissime spirali. v. ic. 



Diam. l /500 — ' 1,30'" = 0,00017 — 0,00014". 



Hab. in stagnis turfosis prope Dublin. 



Sp. minuta Thuret (in Breb. Liste p. 157. N. 3. Eabenh. Krypt. 

 Flor. von Sachs. p. 177.). Sp. parva, fusiformis, laevis, quater, quin- 

 quies vcl sexies longior quam lata, utroque polo acuminata; lamina 

 chlorophyliosa spirali sublata, anfractibus 2 — 2 »/5; locello nullo. v. v. 



Diam. l / 2 74 — l /t»" 4 = 0,00032 — 0,00039". 



Hab. in fossis Galliae (prope Parisios, Falaise), Saxoniae, Borussiae, 

 Sueciae (ad Upsaliam legit Cleve). 



b. Laminis chlorophyllosis pluribus. 



Sp. obscura Ralfs (Brit. Desmid. p. 179. N. 2. T. XXXIV. 

 F. 2. Breb. Liste p. 157. X. 2. Fresemus in Verh. der Senckenb 

 naturf. Ges. II. p. 240. T. XI. F. 21 — 26. Eabenh. Alg. Xo. 510 

 et 727 !). Sp. valida, cylindrica vel fusiformis, obscure viridis, quinquies 

 vel octies longior quam lata, utroque polo attenuata, apicibus obtusis; 

 laminis chloroph. pluribus angustis, singulis, anfractibus 2—3. v. v. 



Diam. l / 90 — */ 8 i # " = 0,00098 — 0,0011". 



Hab. in aquis stagnantibus, in muco gelatinoso per rupes, aquae- 

 iuctus, muros irroratos effuso per totam Europam , passim observata, 

 5 gr. in Anglia: Dolgelley , Penzance (J. Ealfs) , Clifton (Leipner) ; in 

 Elibernia: Dublin (Archer) ; in Gallia : Falaise (de Brebisson), Cherbourg 

 Le Jolis); in Hollandia : Leiden (Suringar); in Suecia: Stockholm, 

 Jpsala (Cleve), Gothenburg (L. E.); inGermania: Neudamm (Itzigsohn 



10* 



